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EP 3 111 274 A1

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(43) Date of publication: 04.01.2017 Bulletin 2017/01 (21) Application number: 15712452.0 (22) Date of filing: 26.02.2015

(51) International Patent Classification (IPC):  G02B 27/18(2006.01) G02B 27/28(2006.01) G02B 27/22(2006.01) (86) International application number: PCT/US2015/017624 (87) International publication number: WO 2015/130868 (03.09.2015 Gazette 2015/35)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 28.02.2014 US 201461946651 P 02.01.2015 US 201514588792 (71) Applicant: Microsoft Technology Licensing, LLC Redmond, WA 98052-6399 (US)	(72) Inventors: POWELL, Karlton Redmond, Washington 98052-6399 (US) LARGE, Tim Redmond, Washington 98052-6399 (US) TOKUDA, Yutaka Redmond, Washington 98052-6399 (US) (74) Representative: Fischer, Michael Maria et al Olswang Germany LLP IP Rosental 4 80331 Munich 80331 Munich (DE)